On this day: May 10

2013: The final component of One World Trade Center's spire in installed, making the building once dubbed the "Freedom Tower" the tallest building in the Western Hemisphere. The 104-storybuilding reaches a symbolic height of 1,776 feet at its spire, making it the fourth-tallest building in the world. It stands on the northwest corner of the 16-acre World Trade Center site, on the site of the original 6 World Trade Center, which was demolished after being damaged in the Sept. 11, 2001, terrorist attacks that brought down the original Twin Towers of the World Trade Center.

The First Transcontinental Railroad is completed, "Rock Around the Clock" is released, The Incredible Hulk makes his debut, Wilt Chamberlain plays his last game, and Nelson Mandela is inaugurated, all on this day.

Israeli Prime Minister Benjamin Netanyahu warned Tuesday that a proposed agreement between world powers and Iran was "a bad deal" that would not stop Tehran from getting nuclear weapons -- but would rather pave its way to getting lots of them and lea...